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<h1>Dokumentacja pliku /home/arek/Dokumenty/AVRprograms/MKP_3_7/usart_driver.c</h1>  </div>
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<p>XMEGA USART driver source file.  
<a href="#_details">Więcej...</a></p>
<div class="textblock"><code>#include &quot;<a class="el" href="usart__driver_8h_source.html">usart_driver.h</a>&quot;</code><br/>
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<hr/><a name="_details"></a><h2>Opis szczegółowy</h2>
<div class="textblock"><p>XMEGA USART driver source file. </p>
<p>This file contains the function implementations the XMEGA interrupt and polled USART driver.</p>
<p>The driver is not intended for size and/or speed critical code, since most functions are just a few lines of code, and the function call overhead would decrease code performance. The driver is intended for rapid prototyping and documentation purposes for getting started with the XMEGA ADC module.</p>
<p>For size and/or speed critical code, it is recommended to copy the function contents directly into your application instead of making a function call.</p>
<p>Some functions use the following construct: "some_register = ... | (some_parameter ? SOME_BIT_bm : 0) | ..." Although the use of the ternary operator ( if ? then : else ) is discouraged, in some occasions the operator makes it possible to write pretty clean and neat code. In this driver, the construct is used to set or not set a configuration bit based on a boolean input parameter, such as the "some_parameter" in the example above.</p>
<dl class="user"><dt><b>Application note:</b></dt><dd>AVR1307: Using the XMEGA USART</dd></dl>
<dl class="user"><dt><b>Documentation</b></dt><dd>For comprehensive code documentation, supported compilers, compiler settings and supported devices see readme.html</dd></dl>
<dl class="author"><dt><b>Autor:</b></dt><dd>Atmel Corporation: <a href="http://www.atmel.com">http://www.atmel.com</a> <br/>
 Support email: <a href="mailto:avr@atmel.com">avr@atmel.com</a></dd></dl>
<dl class="rcs"><dt><b>Revision:</b></dt><dd>1694 </dd></dl>
<dl class="rcs"><dt><b>Date:</b></dt><dd>2008-07-29 14:21:58 +0200 (ti, 29 jul 2008) </dd></dl>
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<p>Copyright (c) 2008, Atmel Corporation All rights reserved.</p>
<p>Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:</p>
<p>1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.</p>
<p>2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.</p>
<p>3. The name of ATMEL may not be used to endorse or promote products derived from this software without specific prior written permission.</p>
<p>THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. </p>
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